\documentclass[]{article}
\setlength{\pdfpagewidth}{8.5in} \setlength{\pdfpageheight}{11in}
\begin{document}
\begin{tabular}{lcc}
\multicolumn{3}{c}{Impact of treatment assignment on choose maths as principal subject} \\ \hline
 & (1) & (2) \\
VARIABLES & MTC\_dummy & MTC\_dummy \\ \hline
 &  &  \\
treatment & 0.013 & -0.066 \\
 & (0.056) & (0.074) \\
treatment\_female &  & 0.177 \\
 &  & (0.109) \\
female & 0.039 & -0.067 \\
 & (0.055) & (0.085) \\
Constant & -1.275** & -1.271** \\
 & (0.625) & (0.622) \\
 &  &  \\
Observations & 221 & 221 \\
R-squared & 0.112 & 0.123 \\
mean & 0.189 & 0.162 \\
overall &  & 0.111 \\
se &  & 0.0821 \\
 pvalue &  & 0.179 \\ \hline
\multicolumn{3}{c}{ Standard errors in parentheses} \\
\multicolumn{3}{c}{ *** p$<$0.01, ** p$<$0.05, * p$<$0.1} \\
\end{tabular}
\end{document}
